org.mmbase.util
Class MagicFile

java.lang.Object
  |
  +--org.mmbase.util.MagicFile

public class MagicFile

extends java.lang.Object

Parse the UNIX magic file and determine types of files. Implementation made on the basis of actual magic file and its manual.
TODO:
- link the info with mimetypes
- add test modifiers
- add commandline switches for warning, error and debugging messages

Ignored features of magic:
- date types
- indirect offsets (prefix of '&' in sublevel match or (address+bytes) where offset = value of address plus bytes
- AND'ing of type

BUGS:
- test string isn't read when end of line is reached in absence of a message string

Tested:
- .doc
- .rtf
- .pdf
- .sh
- .gz
- .bz2
- .html
- .rpm
- .wav

Not supported by magic file:
- StarOffice

Author:

cjr@dds.nl

Inner Class Summary

protected class	MagicFile.Detector
protected class	MagicFile.MagicXMLReader
protected class	MagicFile.NotSupported Exception to be thrown when a feature from UNIX 'file'/magic is not supported

Field Summary

protected static int	BUFSIZE
protected java.util.Vector	detectors
protected byte[]	lithmus
protected static java.lang.String	magicfile
protected java.lang.String	magicxml
protected static java.lang.String	MAGICXMLFILE

Constructor Summary

MagicFile()
Constructor: reads detection data from magic file

Method Summary

java.util.Enumeration	elements()
boolean	fromXML(java.lang.String path)
static void	main(java.lang.String[] argv)
java.lang.String	test(byte[] lithmus)
java.lang.String	test(java.lang.String path)
boolean	toXML(java.io.File f) Write the current datastructure to an XML file XXX Ugly and hardcoded paths
boolean	toXML(java.lang.String path)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

magicfile

protected static java.lang.String magicfile

MAGICXMLFILE

protected static java.lang.String MAGICXMLFILE

BUFSIZE

protected static int BUFSIZE

lithmus

protected byte[] lithmus

magicxml

protected java.lang.String magicxml

detectors

protected java.util.Vector detectors

Constructor Detail

MagicFile

public MagicFile()

Constructor: reads detection data from magic file

Method Detail

test

public java.lang.String test(java.lang.String path)

Parameters:

path - Location of file to be checked

Returns:

Type of the file as determined by the magic file

test

public java.lang.String test(byte[] lithmus)

elements

public java.util.Enumeration elements()

Returns:

Enumeration of detectors

toXML

public boolean toXML(java.lang.String path)
              throws java.io.IOException

toXML

public boolean toXML(java.io.File f)
              throws java.io.IOException

Write the current datastructure to an XML file XXX Ugly and hardcoded paths

fromXML

public boolean fromXML(java.lang.String path)

main

public static void main(java.lang.String[] argv)